A reliable research peptide supplier should provide documentation that supports identity, purity, and traceability for laboratory use. At minimum, purchasers should look for a current Certificate of Analysis (COA) that includes batch or lot number, product name, stated purity, analytical method, and date of testing.
Useful supporting documents
- HPLC data to show chromatographic purity and detect major impurities
- Mass spectrometry results to confirm molecular mass and identity
- Material specifications describing format, quantity, and storage conditions
- Safety or handling information when applicable
- Traceability records linking the item to a specific production batch
For research procurement, it is also helpful to confirm packaging details, shipping conditions, and recommended storage after receipt. Laboratories should verify that the documentation matches the physical label and the purchased lot.
Important: peptides supplied for research should be clearly labeled for research use only and not intended for human consumption.